National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

Fair

38°F

3°C

Humidity 86%
Wind Speed NW 5 mph
Barometer 29.99 in (1015.6 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 19 Apr 11:56 pm EDT
Extended Forecast for

South Dennis MA

  • Overnight

    Overnight: Mostly clear, with a low around 37. West wind 8 to 10 mph, with gusts as high as 21 mph.

    Low: 37 °F

    Mostly Clear

  • Monday

    Monday: Increasing clouds, with a high near 51. West wind around 6 mph becoming south in the afternoon.

    High: 51 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: A slight chance of showers before 3am. Mostly cloudy, with a low around 36. North wind 5 to 8 mph. Chance of precipitation is 20%.

    Low: 36 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 47. North wind around 7 mph.

    High: 47 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 37. Calm wind becoming southwest around 5 mph after midnight.

    Low: 37 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers before 2pm. Mostly cloudy, with a high near 49. South wind 6 to 10 mph. Chance of precipitation is 20%.

    High: 49 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 41. East wind 3 to 5 mph.

    Low: 41 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 54. Northwest wind 5 to 7 mph.

    High: 54 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 41. Light and variable wind.

    Low: 41 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 37. West wind 8 to 10 mph, with gusts as high as 21 mph.
Monday
Increasing clouds, with a high near 51. West wind around 6 mph becoming south in the afternoon.
Monday Night
A slight chance of showers before 3am. Mostly cloudy, with a low around 36. North wind 5 to 8 mph. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 47. North wind around 7 mph.
Tuesday Night
Partly cloudy, with a low around 37. Calm wind becoming southwest around 5 mph after midnight.
Wednesday
A slight chance of showers before 2pm. Mostly cloudy, with a high near 49. South wind 6 to 10 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 41. East wind 3 to 5 mph.
Thursday
Partly sunny, with a high near 54. Northwest wind 5 to 7 mph.
Thursday Night
Mostly cloudy, with a low around 41. Light and variable wind.
Friday
Mostly sunny, with a high near 52. Northeast wind 5 to 8 mph.
Friday Night
Partly cloudy, with a low around 41. Light northeast wind.
Saturday
A chance of showers. Partly sunny, with a high near 52. Northeast wind 5 to 8 mph. Chance of precipitation is 30%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 42. Southeast wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 30%.
Sunday
A chance of showers. Partly sunny, with a high near 53. East wind 5 to 8 mph. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Dennis MA
 41.69°N 70.16°W (Elev. 7 ft)
Last Update:
9:56 pm EDT Apr 19, 2026
Forecast Valid:
12am EDT Apr 20, 2026-6pm EDT Apr 26, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation